See also: List of individual Chromium isotopes (and general data sources).
General data
Name of the isotope:Chromium-52; Cr-52Symbol:52Cr or 5224CrMass number A:52 (= number of nucleons)Atomic number Z:24 (= number of protons)Neutrons N:28Nucleon pairing (Z - N):even - evenNuclear ratio (N/Z ratio):1.1666666666667 (= neutron-proton ratio)Neutron excess (N-Z):4Isotopic mass:51.940506(4) u (atomic weight of Chromium-52)Nuclide mass:51.9273404 u (calculated nuclear mass without electrons)Mass excess:-55.4183 MeVMass defect:0.489912416 u (per nucleus)Nuclear binding energy:456.35047603 MeV (per nucleus) 8.77597069 MeV (average binding energy per nucleon)Separation energy:SN = 12.0392(5) MeV (first neutron) SP = 10.5044(5) MeV (first proton)Half-life:stableSpin and parity: (nuclear angular momentum)0+Charge radius:3.6452(42) femtometer fmMirror nucleus:Nickel-52Year of discovery:1923
Comparison of the natural Chromium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):
Atomic Mass ma
Quantity
Half-life
Spin
Chromium Isotopic mixture
51.9961 u
100 %
Isotope 50Cr
49.9460414(5) u
4.345(13) %
1.3 × 1018 years
0+
Isotope 52Cr
51.940506(4) u
83.789(18) %
stable
0+
Isotope 53Cr
52.94064630(12) u
9.501(17) %
stable
3/2-
Isotope 54Cr
53.938879(4) u
2.365(7) %
stable
0+
Isotones and Isobars
The following table shows the atomic nuclei that are isotonic (same neutron number N = 28) and isobaric (same nucleon number A = 52) with Chromium-52. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.
